ElectrochemistryCalculation of Oxidation Number71Choose the best answerThe oxidation states of nitrogen in NH₄NO₃ are:A−3 and +5B+5 and +3C−3 and −3D0 and +5 Like 4 Discuss 0Share2
ElectrochemistryOxidation Number72Choose the best answerOxidation number of an element may be:APositiveBZero or fractionalCNegativeDAll of these Like 0 Discuss 0Share
ElectrochemistrySalt Bridge73Choose the best answerThe main function of a salt bridge in a voltaic cell is to:ACarry electrons between electrodesBStop movement of ionsCMix both half-cell solutions completelyDAllow ion migration to maintain electrical neutrality Like 0 Discuss 0Share
ElectrochemistryStandard Hydrogen Electrode74Choose the best answerWhen SHE is connected to a Cu²⁺/Cu half-cell under standard conditions, electron flow is from:AHydrogen electrode to copper electrodeBCopper electrode to hydrogen electrodeCHydrogen electrode to the electrolyte onlyDCuSO₄ solution to the hydrogen electrode Like 0 Discuss 0Share
ElectrochemistryElectrolysis of Aqueous Solutions75Choose the best answerDuring electrolysis of aqueous NaCl, the main product formed at the cathode is:AH₂BCl₂CO₂DNa Like 0 Discuss 0Share